458 Socom test load- Take 1

Well I finally got to shoot the 458s I had loaded prior to even having my upper completed.



Down and Dirty:



Temp 43/Sea level



Tromix 10.5 Barrel

Pistol Gas System

BTE Adjustable Gas Block



Hornady 325 FTX

New Starline Brass (Sized and trimed)

Fed Lg Mag Pistol Primer

H110 Powder

2.200 OAL



28.5g



1377- Ejected but Did not feed next rd

1422-FTF/ FTE

1377- Ejected but did Not hold bolt open



29g



1458- 1/2 ejected

1427- FTF

1446

1313* (William Tom Frank)*

1468

1458- Did not hold bolt open on last rd



29.5g



1441

1470

1465

1479

1470- Bolt Did hold Open on last rd



Only Crono today. Will load another batch of 29 and 29.5 for Accuracy and play with gas block and add the "Rubber City Armory" adjustable gas tube.



I am sure this is all going to be Null and void because ANY day now my Form 1 suppressor stamp will be in and that will change everything I have done and learned with the above data. But it worth the price of admission.



If anything I hope this will help the next guy get a starting point on load development for a similar set up.

458 Socom test load- Take 1